Gulf Keystone Petroleum Regulatory News (GKP)

4 Jun 2007 09:28

Gulf Keystone Petroleum Ld04 June 2007 TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES (1). Identity of the issuer or the underlying issuer of existing shares to whichvoting rights are attached (ii): GULF KEYSTONE PETROLEUM LTD 2. Reason for the notification (please state Yes/No): ( ) An acquisition or disposal of voting rights: (X) An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: ( ) An event changing the breakdown of voting rights: ( ) Other (please specify) : ( ) 3. Full name of person(s) subject to the notification obligation (iii): OPPENHEIMERFUNDS INC (OFI) 4. Full name of shareholder(s) (if different from 3.) (iv): 5. Date of the transaction and date on which the threshold is crossed or reachedif different) (v): 31 MAY 2007 6. Date on which issuer notified: 1 JUNE 2007 7. Threshold(s) that is/are crossed or reached: 7% 8. Notified details: GULF KEYSTONE PETROLEUM LTDCANON'S COURT22 VICTORIA STREETHAMILTONHM12 BERMUDA www.gulfkeystone.com Fax Number 011 44 207514 1427 Jon Cooper (Finance Director): jcooper@gulfkeystone.com A: Voting rights attached to shares Class/type of shares Situation previous to if possible using the the Triggering ISIN CODE transaction (vi) Number of shares Number of voting Rights (viii) BMG4209G1087 17,000,000 17,000,000 Resulting situation after the triggering transaction (vii) Class/type of shares Number of shares Number of voting rights % of voting rights if possible using (ix) the ISIN CODE Direct Direct (x) Indirect (xi) Direct Indirect BMG4209G1087 20,500,000 20,500,000 7.41% B: Financial Instruments Resulting situation after the triggering transaction (xii) Type of Expiration Date Exercise/Conversion Number of voting % of voting financial (xiii) Period/ Date (xiv) rights that may be rights instrument acquired if the instrument is exercised/ converted. Total (A+B) Number of voting rights % of voting rights 20,500,000 7.41% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable (xv): OPPENHEIMERFUNDS INC. OWNS AS OF 5/31/2007, 20,500,000 SHARES EQUAL TO 7.41%BASED ON SHARES OUTSTANDING OF 276,755,108 Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: 14. Contact name: 15. Contact telephone number: This information is provided by RNS The company news service from the London Stock Exchange